[Elecraft] K3 ERR KEY - Continuous Keying

[Paul Fletcher]

My K3 display shows ERR KEY when I turn it on. 

Try disconnecting all cables from the K3 except the antenna and power (obviously!) and see if the symptoms persist. If they don't, plug in one cable at a time until the problem returns and go from there. Alternatively it could be a problem with the I/O daughter board. If you still have the problem with all cables disconnected remove the daughter board that has the RS232 and accessory connectors on (the K3 will operate fine without it) and see if that fixes the problem. If it does clean the daughter board thoroughly with something that removes water soluble flux and a tooth brush, let it dry and reinstall it and see if that fixes the problem. If the problem reappears you could try again or get the board replaced.

If removing the board doesn't fix the problem I'd suggest contacting Elecraft tech support.

Regards,
Paul M1PAF
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